Home / 715,287.80-1,072,931.70-478,897.40

Finding the Fourth Proportional to 715,287.80, 1,072,931.70 and 478,897.40

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Solution

The fourth proportional to 715,287.80, 1,072,931.70 and 478,897.40 is: 718,346.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    715,287.80 : 1,072,931.70 = 478,897.40 : x
  2. Step 2: Convert to fraction form
    715,287.80/1,072,931.70 = 478,897.40/x
  3. Step 3: Cross multiply
    715,287.80x = 1,072,931.70 × 478,897.40
  4. Step 4: Simplify right side
    715,287.80x = 513,824,201,507.58
  5. Step 5: Solve for x
    x = 513,824,201,507.58/715,287.80
  6. Step 6: Final answer
    x = 718,346.10

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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.