Home / 820,155.30-1,230,232.95-519,005.40

Finding the Fourth Proportional to 820,155.30, 1,230,232.95 and 519,005.40

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Solution

The fourth proportional to 820,155.30, 1,230,232.95 and 519,005.40 is: 778,508.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    820,155.30 : 1,230,232.95 = 519,005.40 : x
  2. Step 2: Convert to fraction form
    820,155.30/1,230,232.95 = 519,005.40/x
  3. Step 3: Cross multiply
    820,155.30x = 1,230,232.95 × 519,005.40
  4. Step 4: Simplify right side
    820,155.30x = 638,497,544,307.93
  5. Step 5: Solve for x
    x = 638,497,544,307.93/820,155.30
  6. Step 6: Final answer
    x = 778,508.10

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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.