Home / 465,354,051.72-642,188,434.71-256,513,681.95

Finding the Fourth Proportional to 465,354,051.72, 642,188,434.71 and 256,513,681.95

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Solution

The fourth proportional to 465,354,051.72, 642,188,434.71 and 256,513,681.95 is: 353,988,794.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    465,354,051.72 : 642,188,434.71 = 256,513,681.95 : x
  2. Step 2: Convert to fraction form
    465,354,051.72/642,188,434.71 = 256,513,681.95/x
  3. Step 3: Cross multiply
    465,354,051.72x = 642,188,434.71 × 256,513,681.95
  4. Step 4: Simplify right side
    465,354,051.72x = 164,730,119,893,169,280
  5. Step 5: Solve for x
    x = 164,730,119,893,169,280/465,354,051.72
  6. Step 6: Final answer
    x = 353,988,794.73

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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.