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Finding the Fourth Proportional to 583,389.32, 805,077.62 and 315,117.32

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Solution

The fourth proportional to 583,389.32, 805,077.62 and 315,117.32 is: 434,862.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    583,389.32 : 805,077.62 = 315,117.32 : x
  2. Step 2: Convert to fraction form
    583,389.32/805,077.62 = 315,117.32/x
  3. Step 3: Cross multiply
    583,389.32x = 805,077.62 × 315,117.32
  4. Step 4: Simplify right side
    583,389.32x = 253,693,902,006.38
  5. Step 5: Solve for x
    x = 253,693,902,006.38/583,389.32
  6. Step 6: Final answer
    x = 434,862.10

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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.