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Finding the Fourth Proportional to 624,966.48, 862,457.76 and 338,490

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Solution

The fourth proportional to 624,966.48, 862,457.76 and 338,490 is: 467,118.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    624,966.48 : 862,457.76 = 338,490 : x
  2. Step 2: Convert to fraction form
    624,966.48/862,457.76 = 338,490/x
  3. Step 3: Cross multiply
    624,966.48x = 862,457.76 × 338,490
  4. Step 4: Simplify right side
    624,966.48x = 291,933,327,182.40
  5. Step 5: Solve for x
    x = 291,933,327,182.40/624,966.48
  6. Step 6: Final answer
    x = 467,118.38

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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.