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Finding the Fourth Proportional to 966,915.20, 1,334,264.74 and 559,043.20

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Solution

The fourth proportional to 966,915.20, 1,334,264.74 and 559,043.20 is: 771,434.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    966,915.20 : 1,334,264.74 = 559,043.20 : x
  2. Step 2: Convert to fraction form
    966,915.20/1,334,264.74 = 559,043.20/x
  3. Step 3: Cross multiply
    966,915.20x = 1,334,264.74 × 559,043.20
  4. Step 4: Simplify right side
    966,915.20x = 745,911,629,896.77
  5. Step 5: Solve for x
    x = 745,911,629,896.77/966,915.20
  6. Step 6: Final answer
    x = 771,434.38

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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.