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Finding the Fourth Proportional to 772,605.10, 1,158,907.65 and 506,520.10

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Solution

The fourth proportional to 772,605.10, 1,158,907.65 and 506,520.10 is: 759,780.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    772,605.10 : 1,158,907.65 = 506,520.10 : x
  2. Step 2: Convert to fraction form
    772,605.10/1,158,907.65 = 506,520.10/x
  3. Step 3: Cross multiply
    772,605.10x = 1,158,907.65 × 506,520.10
  4. Step 4: Simplify right side
    772,605.10x = 587,010,018,768.77
  5. Step 5: Solve for x
    x = 587,010,018,768.77/772,605.10
  6. Step 6: Final answer
    x = 759,780.15

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Double scale
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Similar ratio
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1.5x scale

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.