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Finding the Fourth Proportional to 714,781.98, 986,402.07 and 388,096.02

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Solution

The fourth proportional to 714,781.98, 986,402.07 and 388,096.02 is: 535,574.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    714,781.98 : 986,402.07 = 388,096.02 : x
  2. Step 2: Convert to fraction form
    714,781.98/986,402.07 = 388,096.02/x
  3. Step 3: Cross multiply
    714,781.98x = 986,402.07 × 388,096.02
  4. Step 4: Simplify right side
    714,781.98x = 382,818,717,486.76
  5. Step 5: Solve for x
    x = 382,818,717,486.76/714,781.98
  6. Step 6: Final answer
    x = 535,574.10

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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.