Home / 478,256,412.80-717,384,619.20-155,140,284.80

Finding the Fourth Proportional to 478,256,412.80, 717,384,619.20 and 155,140,284.80

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Solution

The fourth proportional to 478,256,412.80, 717,384,619.20 and 155,140,284.80 is: 232,710,427.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,256,412.80 : 717,384,619.20 = 155,140,284.80 : x
  2. Step 2: Convert to fraction form
    478,256,412.80/717,384,619.20 = 155,140,284.80/x
  3. Step 3: Cross multiply
    478,256,412.80x = 717,384,619.20 × 155,140,284.80
  4. Step 4: Simplify right side
    478,256,412.80x = 111,295,254,133,827,568
  5. Step 5: Solve for x
    x = 111,295,254,133,827,568/478,256,412.80
  6. Step 6: Final answer
    x = 232,710,427.20

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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.