Home / 989,666.10-1,484,499.15-429,794.10

Finding the Fourth Proportional to 989,666.10, 1,484,499.15 and 429,794.10

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Solution

The fourth proportional to 989,666.10, 1,484,499.15 and 429,794.10 is: 644,691.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    989,666.10 : 1,484,499.15 = 429,794.10 : x
  2. Step 2: Convert to fraction form
    989,666.10/1,484,499.15 = 429,794.10/x
  3. Step 3: Cross multiply
    989,666.10x = 1,484,499.15 × 429,794.10
  4. Step 4: Simplify right side
    989,666.10x = 638,028,976,125.02
  5. Step 5: Solve for x
    x = 638,028,976,125.02/989,666.10
  6. Step 6: Final answer
    x = 644,691.15

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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.