Home / 830,308.34-1,145,838.21-490,808.18

Finding the Fourth Proportional to 830,308.34, 1,145,838.21 and 490,808.18

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Solution

The fourth proportional to 830,308.34, 1,145,838.21 and 490,808.18 is: 677,322.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    830,308.34 : 1,145,838.21 = 490,808.18 : x
  2. Step 2: Convert to fraction form
    830,308.34/1,145,838.21 = 490,808.18/x
  3. Step 3: Cross multiply
    830,308.34x = 1,145,838.21 × 490,808.18
  4. Step 4: Simplify right side
    830,308.34x = 562,386,766,424.56
  5. Step 5: Solve for x
    x = 562,386,766,424.56/830,308.34
  6. Step 6: Final answer
    x = 677,322.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.