Home / 725,000.32-1,000,499.93-402,740.40

Finding the Fourth Proportional to 725,000.32, 1,000,499.93 and 402,740.40

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Solution

The fourth proportional to 725,000.32, 1,000,499.93 and 402,740.40 is: 555,781.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    725,000.32 : 1,000,499.93 = 402,740.40 : x
  2. Step 2: Convert to fraction form
    725,000.32/1,000,499.93 = 402,740.40/x
  3. Step 3: Cross multiply
    725,000.32x = 1,000,499.93 × 402,740.40
  4. Step 4: Simplify right side
    725,000.32x = 402,941,742,008.17
  5. Step 5: Solve for x
    x = 402,941,742,008.17/725,000.32
  6. Step 6: Final answer
    x = 555,781.47

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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.