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Finding the Fourth Proportional to 551,014.60, 826,521.90 and 390,051.40

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Solution

The fourth proportional to 551,014.60, 826,521.90 and 390,051.40 is: 585,077.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,014.60 : 826,521.90 = 390,051.40 : x
  2. Step 2: Convert to fraction form
    551,014.60/826,521.90 = 390,051.40/x
  3. Step 3: Cross multiply
    551,014.60x = 826,521.90 × 390,051.40
  4. Step 4: Simplify right side
    551,014.60x = 322,386,024,225.66
  5. Step 5: Solve for x
    x = 322,386,024,225.66/551,014.60
  6. Step 6: Final answer
    x = 585,077.10

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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.