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Finding the Fourth Proportional to 710,561.52, 980,563.08 and 388,264.23

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Solution

The fourth proportional to 710,561.52, 980,563.08 and 388,264.23 is: 535,798.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,561.52 : 980,563.08 = 388,264.23 : x
  2. Step 2: Convert to fraction form
    710,561.52/980,563.08 = 388,264.23/x
  3. Step 3: Cross multiply
    710,561.52x = 980,563.08 × 388,264.23
  4. Step 4: Simplify right side
    710,561.52x = 380,717,569,222.63
  5. Step 5: Solve for x
    x = 380,717,569,222.63/710,561.52
  6. Step 6: Final answer
    x = 535,798.18

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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.