Home / 919,283.54-1,378,925.28-288,248.18

Finding the Fourth Proportional to 919,283.54, 1,378,925.28 and 288,248.18

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Solution

The fourth proportional to 919,283.54, 1,378,925.28 and 288,248.18 is: 432,372.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,283.54 : 1,378,925.28 = 288,248.18 : x
  2. Step 2: Convert to fraction form
    919,283.54/1,378,925.28 = 288,248.18/x
  3. Step 3: Cross multiply
    919,283.54x = 1,378,925.28 × 288,248.18
  4. Step 4: Simplify right side
    919,283.54x = 397,472,702,315.99
  5. Step 5: Solve for x
    x = 397,472,702,315.99/919,283.54
  6. Step 6: Final answer
    x = 432,372.26

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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.