Home / 787,965.10-1,087,554.38-512,666.96

Finding the Fourth Proportional to 787,965.10, 1,087,554.38 and 512,666.96

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Solution

The fourth proportional to 787,965.10, 1,087,554.38 and 512,666.96 is: 707,586.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    787,965.10 : 1,087,554.38 = 512,666.96 : x
  2. Step 2: Convert to fraction form
    787,965.10/1,087,554.38 = 512,666.96/x
  3. Step 3: Cross multiply
    787,965.10x = 1,087,554.38 × 512,666.96
  4. Step 4: Simplify right side
    787,965.10x = 557,553,189,828.18
  5. Step 5: Solve for x
    x = 557,553,189,828.18/787,965.10
  6. Step 6: Final answer
    x = 707,586.15

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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.