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Finding the Fourth Proportional to 616,417.19, 923,131.05 and 426,344.10

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Solution

The fourth proportional to 616,417.19, 923,131.05 and 426,344.10 is: 638,482.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    616,417.19 : 923,131.05 = 426,344.10 : x
  2. Step 2: Convert to fraction form
    616,417.19/923,131.05 = 426,344.10/x
  3. Step 3: Cross multiply
    616,417.19x = 923,131.05 × 426,344.10
  4. Step 4: Simplify right side
    616,417.19x = 393,571,476,694.31
  5. Step 5: Solve for x
    x = 393,571,476,694.31/616,417.19
  6. Step 6: Final answer
    x = 638,482.32

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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.