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Finding the Fourth Proportional to 553,368.10, 830,052.15 and 506,128.90

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Solution

The fourth proportional to 553,368.10, 830,052.15 and 506,128.90 is: 759,193.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,368.10 : 830,052.15 = 506,128.90 : x
  2. Step 2: Convert to fraction form
    553,368.10/830,052.15 = 506,128.90/x
  3. Step 3: Cross multiply
    553,368.10x = 830,052.15 × 506,128.90
  4. Step 4: Simplify right side
    553,368.10x = 420,113,381,622.14
  5. Step 5: Solve for x
    x = 420,113,381,622.14/553,368.10
  6. Step 6: Final answer
    x = 759,193.35

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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.