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Finding the Fourth Proportional to 578,532.20, 778,530.15 and 578,532.20

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Solution

The fourth proportional to 578,532.20, 778,530.15 and 578,532.20 is: 778,530.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,532.20 : 778,530.15 = 578,532.20 : x
  2. Step 2: Convert to fraction form
    578,532.20/778,530.15 = 578,532.20/x
  3. Step 3: Cross multiply
    578,532.20x = 778,530.15 × 578,532.20
  4. Step 4: Simplify right side
    578,532.20x = 450,404,760,445.83
  5. Step 5: Solve for x
    x = 450,404,760,445.83/578,532.20
  6. Step 6: Final answer
    x = 778,530.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.