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Finding the Fourth Proportional to 655,887.18, 905,024.43 and 369,389.10

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Solution

The fourth proportional to 655,887.18, 905,024.43 and 369,389.10 is: 509,700.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,887.18 : 905,024.43 = 369,389.10 : x
  2. Step 2: Convert to fraction form
    655,887.18/905,024.43 = 369,389.10/x
  3. Step 3: Cross multiply
    655,887.18x = 905,024.43 × 369,389.10
  4. Step 4: Simplify right side
    655,887.18x = 334,306,159,675.71
  5. Step 5: Solve for x
    x = 334,306,159,675.71/655,887.18
  6. Step 6: Final answer
    x = 509,700.71

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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.