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Finding the Fourth Proportional to 710,626.26, 980,677.08 and 388,349.94

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Solution

The fourth proportional to 710,626.26, 980,677.08 and 388,349.94 is: 535,929.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,626.26 : 980,677.08 = 388,349.94 : x
  2. Step 2: Convert to fraction form
    710,626.26/980,677.08 = 388,349.94/x
  3. Step 3: Cross multiply
    710,626.26x = 980,677.08 × 388,349.94
  4. Step 4: Simplify right side
    710,626.26x = 380,845,885,177.38
  5. Step 5: Solve for x
    x = 380,845,885,177.38/710,626.26
  6. Step 6: Final answer
    x = 535,929.93

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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.