Home / 839,809,497.40-1,259,714,246.10-472,477,478.20

Finding the Fourth Proportional to 839,809,497.40, 1,259,714,246.10 and 472,477,478.20

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Solution

The fourth proportional to 839,809,497.40, 1,259,714,246.10 and 472,477,478.20 is: 708,716,217.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    839,809,497.40 : 1,259,714,246.10 = 472,477,478.20 : x
  2. Step 2: Convert to fraction form
    839,809,497.40/1,259,714,246.10 = 472,477,478.20/x
  3. Step 3: Cross multiply
    839,809,497.40x = 1,259,714,246.10 × 472,477,478.20
  4. Step 4: Simplify right side
    839,809,497.40x = 595,186,610,249,942,144
  5. Step 5: Solve for x
    x = 595,186,610,249,942,144/839,809,497.40
  6. Step 6: Final answer
    x = 708,716,217.30

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Double scale
Find fourth proportional to 839,809,498.40, 1,259,714,247.60 and 472,477,479.20
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.