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Finding the Fourth Proportional to 710,019.84, 979,829.76 and 387,733.44

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Solution

The fourth proportional to 710,019.84, 979,829.76 and 387,733.44 is: 535,073.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    710,019.84 : 979,829.76 = 387,733.44 : x
  2. Step 2: Convert to fraction form
    710,019.84/979,829.76 = 387,733.44/x
  3. Step 3: Cross multiply
    710,019.84x = 979,829.76 × 387,733.44
  4. Step 4: Simplify right side
    710,019.84x = 379,912,763,459.17
  5. Step 5: Solve for x
    x = 379,912,763,459.17/710,019.84
  6. Step 6: Final answer
    x = 535,073.45

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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.