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Finding the Fourth Proportional to 611,547.30, 843,963.30 and 339,616.41

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Solution

The fourth proportional to 611,547.30, 843,963.30 and 339,616.41 is: 468,686.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,547.30 : 843,963.30 = 339,616.41 : x
  2. Step 2: Convert to fraction form
    611,547.30/843,963.30 = 339,616.41/x
  3. Step 3: Cross multiply
    611,547.30x = 843,963.30 × 339,616.41
  4. Step 4: Simplify right side
    611,547.30x = 286,623,784,139.71
  5. Step 5: Solve for x
    x = 286,623,784,139.71/611,547.30
  6. Step 6: Final answer
    x = 468,686.20

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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.