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Finding the Fourth Proportional to 564,702.45, 779,187.51 and 319,685.55

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Solution

The fourth proportional to 564,702.45, 779,187.51 and 319,685.55 is: 441,108.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    564,702.45 : 779,187.51 = 319,685.55 : x
  2. Step 2: Convert to fraction form
    564,702.45/779,187.51 = 319,685.55/x
  3. Step 3: Cross multiply
    564,702.45x = 779,187.51 × 319,685.55
  4. Step 4: Simplify right side
    564,702.45x = 249,094,987,687.48
  5. Step 5: Solve for x
    x = 249,094,987,687.48/564,702.45
  6. Step 6: Final answer
    x = 441,108.39

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1.5x scale

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.