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Finding the Fourth Proportional to 788,252, 1,087,787.88 and 430,556

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Solution

The fourth proportional to 788,252, 1,087,787.88 and 430,556 is: 594,167.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    788,252 : 1,087,787.88 = 430,556 : x
  2. Step 2: Convert to fraction form
    788,252/1,087,787.88 = 430,556/x
  3. Step 3: Cross multiply
    788,252x = 1,087,787.88 × 430,556
  4. Step 4: Simplify right side
    788,252x = 468,353,598,461.28
  5. Step 5: Solve for x
    x = 468,353,598,461.28/788,252
  6. Step 6: Final answer
    x = 594,167.35

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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.