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Finding the Fourth Proportional to 608,666.60, 912,999.90 and 293,047.40

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Solution

The fourth proportional to 608,666.60, 912,999.90 and 293,047.40 is: 439,571.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,666.60 : 912,999.90 = 293,047.40 : x
  2. Step 2: Convert to fraction form
    608,666.60/912,999.90 = 293,047.40/x
  3. Step 3: Cross multiply
    608,666.60x = 912,999.90 × 293,047.40
  4. Step 4: Simplify right side
    608,666.60x = 267,552,246,895.26
  5. Step 5: Solve for x
    x = 267,552,246,895.26/608,666.60
  6. Step 6: Final answer
    x = 439,571.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.