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Finding the Fourth Proportional to 710,583.30, 980,593.05 and 388,285.98

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Solution

The fourth proportional to 710,583.30, 980,593.05 and 388,285.98 is: 535,828.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,583.30 : 980,593.05 = 388,285.98 : x
  2. Step 2: Convert to fraction form
    710,583.30/980,593.05 = 388,285.98/x
  3. Step 3: Cross multiply
    710,583.30x = 980,593.05 × 388,285.98
  4. Step 4: Simplify right side
    710,583.30x = 380,750,533,400.44
  5. Step 5: Solve for x
    x = 380,750,533,400.44/710,583.30
  6. Step 6: Final answer
    x = 535,828.15

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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.