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Finding the Fourth Proportional to 710,600.55, 980,641.58 and 388,324.23

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Solution

The fourth proportional to 710,600.55, 980,641.58 and 388,324.23 is: 535,894.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,600.55 : 980,641.58 = 388,324.23 : x
  2. Step 2: Convert to fraction form
    710,600.55/980,641.58 = 388,324.23/x
  3. Step 3: Cross multiply
    710,600.55x = 980,641.58 × 388,324.23
  4. Step 4: Simplify right side
    710,600.55x = 380,806,886,459.48
  5. Step 5: Solve for x
    x = 380,806,886,459.48/710,600.55
  6. Step 6: Final answer
    x = 535,894.44

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Double scale
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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.