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Finding the Fourth Proportional to 553,282.40, 830,701.20 and 435,087.20

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Solution

The fourth proportional to 553,282.40, 830,701.20 and 435,087.20 is: 653,242.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,282.40 : 830,701.20 = 435,087.20 : x
  2. Step 2: Convert to fraction form
    553,282.40/830,701.20 = 435,087.20/x
  3. Step 3: Cross multiply
    553,282.40x = 830,701.20 × 435,087.20
  4. Step 4: Simplify right side
    553,282.40x = 361,427,459,144.64
  5. Step 5: Solve for x
    x = 361,427,459,144.64/553,282.40
  6. Step 6: Final answer
    x = 653,242.28

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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.