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Finding the Fourth Proportional to 553,870.28, 826,458.10 and 520,015.52

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Solution

The fourth proportional to 553,870.28, 826,458.10 and 520,015.52 is: 775,941.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    553,870.28 : 826,458.10 = 520,015.52 : x
  2. Step 2: Convert to fraction form
    553,870.28/826,458.10 = 520,015.52/x
  3. Step 3: Cross multiply
    553,870.28x = 826,458.10 × 520,015.52
  4. Step 4: Simplify right side
    553,870.28x = 429,771,038,629.71
  5. Step 5: Solve for x
    x = 429,771,038,629.71/553,870.28
  6. Step 6: Final answer
    x = 775,941.69

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.