Home / 917,937.15-1,376,863.65-318,945.18

Finding the Fourth Proportional to 917,937.15, 1,376,863.65 and 318,945.18

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Solution

The fourth proportional to 917,937.15, 1,376,863.65 and 318,945.18 is: 478,403.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    917,937.15 : 1,376,863.65 = 318,945.18 : x
  2. Step 2: Convert to fraction form
    917,937.15/1,376,863.65 = 318,945.18/x
  3. Step 3: Cross multiply
    917,937.15x = 1,376,863.65 × 318,945.18
  4. Step 4: Simplify right side
    917,937.15x = 439,144,024,684.71
  5. Step 5: Solve for x
    x = 439,144,024,684.71/917,937.15
  6. Step 6: Final answer
    x = 478,403.15

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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.