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Finding the Fourth Proportional to 692,678.18, 955,886.46 and 386,759.28

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Solution

The fourth proportional to 692,678.18, 955,886.46 and 386,759.28 is: 533,722.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    692,678.18 : 955,886.46 = 386,759.28 : x
  2. Step 2: Convert to fraction form
    692,678.18/955,886.46 = 386,759.28/x
  3. Step 3: Cross multiply
    692,678.18x = 955,886.46 × 386,759.28
  4. Step 4: Simplify right side
    692,678.18x = 369,697,959,031.35
  5. Step 5: Solve for x
    x = 369,697,959,031.35/692,678.18
  6. Step 6: Final answer
    x = 533,722.54

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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.