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Finding the Fourth Proportional to 615,788.68, 849,786.76 and 343,854.40

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Solution

The fourth proportional to 615,788.68, 849,786.76 and 343,854.40 is: 474,518.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,788.68 : 849,786.76 = 343,854.40 : x
  2. Step 2: Convert to fraction form
    615,788.68/849,786.76 = 343,854.40/x
  3. Step 3: Cross multiply
    615,788.68x = 849,786.76 × 343,854.40
  4. Step 4: Simplify right side
    615,788.68x = 292,202,916,487.74
  5. Step 5: Solve for x
    x = 292,202,916,487.74/615,788.68
  6. Step 6: Final answer
    x = 474,518.17

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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.