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Finding the Fourth Proportional to 563,963.52, 778,281.76 and 309,314.08

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Solution

The fourth proportional to 563,963.52, 778,281.76 and 309,314.08 is: 426,860.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,963.52 : 778,281.76 = 309,314.08 : x
  2. Step 2: Convert to fraction form
    563,963.52/778,281.76 = 309,314.08/x
  3. Step 3: Cross multiply
    563,963.52x = 778,281.76 × 309,314.08
  4. Step 4: Simplify right side
    563,963.52x = 240,733,506,575.18
  5. Step 5: Solve for x
    x = 240,733,506,575.18/563,963.52
  6. Step 6: Final answer
    x = 426,860.07

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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.