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Finding the Fourth Proportional to 502,413.70, 753,620.55 and 342,981.40

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Solution

The fourth proportional to 502,413.70, 753,620.55 and 342,981.40 is: 514,472.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    502,413.70 : 753,620.55 = 342,981.40 : x
  2. Step 2: Convert to fraction form
    502,413.70/753,620.55 = 342,981.40/x
  3. Step 3: Cross multiply
    502,413.70x = 753,620.55 × 342,981.40
  4. Step 4: Simplify right side
    502,413.70x = 258,477,831,307.77
  5. Step 5: Solve for x
    x = 258,477,831,307.77/502,413.70
  6. Step 6: Final answer
    x = 514,472.10

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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.