Home / 1,399,705.96-1,931,655.72-787,898.20

Finding the Fourth Proportional to 1,399,705.96, 1,931,655.72 and 787,898.20

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Solution

The fourth proportional to 1,399,705.96, 1,931,655.72 and 787,898.20 is: 1,087,334.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,399,705.96 : 1,931,655.72 = 787,898.20 : x
  2. Step 2: Convert to fraction form
    1,399,705.96/1,931,655.72 = 787,898.20/x
  3. Step 3: Cross multiply
    1,399,705.96x = 1,931,655.72 × 787,898.20
  4. Step 4: Simplify right side
    1,399,705.96x = 1,521,948,064,807.70
  5. Step 5: Solve for x
    x = 1,521,948,064,807.70/1,399,705.96
  6. Step 6: Final answer
    x = 1,087,334.13

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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.