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Finding the Fourth Proportional to 716,388.84, 987,938.08 and 458,347.45

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Solution

The fourth proportional to 716,388.84, 987,938.08 and 458,347.45 is: 632,085.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    716,388.84 : 987,938.08 = 458,347.45 : x
  2. Step 2: Convert to fraction form
    716,388.84/987,938.08 = 458,347.45/x
  3. Step 3: Cross multiply
    716,388.84x = 987,938.08 × 458,347.45
  4. Step 4: Simplify right side
    716,388.84x = 452,818,899,725.90
  5. Step 5: Solve for x
    x = 452,818,899,725.90/716,388.84
  6. Step 6: Final answer
    x = 632,085.36

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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.