Home / 718,002.59-990,826.49-391,325.91

Finding the Fourth Proportional to 718,002.59, 990,826.49 and 391,325.91

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Solution

The fourth proportional to 718,002.59, 990,826.49 and 391,325.91 is: 540,020.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    718,002.59 : 990,826.49 = 391,325.91 : x
  2. Step 2: Convert to fraction form
    718,002.59/990,826.49 = 391,325.91/x
  3. Step 3: Cross multiply
    718,002.59x = 990,826.49 × 391,325.91
  4. Step 4: Simplify right side
    718,002.59x = 387,736,077,851.36
  5. Step 5: Solve for x
    x = 387,736,077,851.36/718,002.59
  6. Step 6: Final answer
    x = 540,020.45

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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.