Home / 875,126.98-1,207,785.21-512,689.15

Finding the Fourth Proportional to 875,126.98, 1,207,785.21 and 512,689.15

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Solution

The fourth proportional to 875,126.98, 1,207,785.21 and 512,689.15 is: 707,575.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    875,126.98 : 1,207,785.21 = 512,689.15 : x
  2. Step 2: Convert to fraction form
    875,126.98/1,207,785.21 = 512,689.15/x
  3. Step 3: Cross multiply
    875,126.98x = 1,207,785.21 × 512,689.15
  4. Step 4: Simplify right side
    875,126.98x = 619,218,372,697.47
  5. Step 5: Solve for x
    x = 619,218,372,697.47/875,126.98
  6. Step 6: Final answer
    x = 707,575.46

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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.