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Finding the Fourth Proportional to 710,313.50, 980,251.82 and 423,999.66

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Solution

The fourth proportional to 710,313.50, 980,251.82 and 423,999.66 is: 585,130.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,313.50 : 980,251.82 = 423,999.66 : x
  2. Step 2: Convert to fraction form
    710,313.50/980,251.82 = 423,999.66/x
  3. Step 3: Cross multiply
    710,313.50x = 980,251.82 × 423,999.66
  4. Step 4: Simplify right side
    710,313.50x = 415,626,443,925.32
  5. Step 5: Solve for x
    x = 415,626,443,925.32/710,313.50
  6. Step 6: Final answer
    x = 585,130.99

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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.