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Finding the Fourth Proportional to 922,323, 1,272,805.74 and 519,915

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Solution

The fourth proportional to 922,323, 1,272,805.74 and 519,915 is: 717,482.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    922,323 : 1,272,805.74 = 519,915 : x
  2. Step 2: Convert to fraction form
    922,323/1,272,805.74 = 519,915/x
  3. Step 3: Cross multiply
    922,323x = 1,272,805.74 × 519,915
  4. Step 4: Simplify right side
    922,323x = 661,750,796,312.10
  5. Step 5: Solve for x
    x = 661,750,796,312.10/922,323
  6. Step 6: Final answer
    x = 717,482.70

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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.