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Finding the Fourth Proportional to 553,388.40, 830,082.60 and 402,922.80

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Solution

The fourth proportional to 553,388.40, 830,082.60 and 402,922.80 is: 604,384.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,388.40 : 830,082.60 = 402,922.80 : x
  2. Step 2: Convert to fraction form
    553,388.40/830,082.60 = 402,922.80/x
  3. Step 3: Cross multiply
    553,388.40x = 830,082.60 × 402,922.80
  4. Step 4: Simplify right side
    553,388.40x = 334,459,205,423.28
  5. Step 5: Solve for x
    x = 334,459,205,423.28/553,388.40
  6. Step 6: Final answer
    x = 604,384.20

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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.