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Finding the Fourth Proportional to 615,312.89, 849,130.09 and 343,377.89

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Solution

The fourth proportional to 615,312.89, 849,130.09 and 343,377.89 is: 473,860.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,312.89 : 849,130.09 = 343,377.89 : x
  2. Step 2: Convert to fraction form
    615,312.89/849,130.09 = 343,377.89/x
  3. Step 3: Cross multiply
    615,312.89x = 849,130.09 × 343,377.89
  4. Step 4: Simplify right side
    615,312.89x = 291,572,493,535.62
  5. Step 5: Solve for x
    x = 291,572,493,535.62/615,312.89
  6. Step 6: Final answer
    x = 473,860.54

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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.