Home / 778,979.38-1,075,170.90-456,793.28

Finding the Fourth Proportional to 778,979.38, 1,075,170.90 and 456,793.28

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Solution

The fourth proportional to 778,979.38, 1,075,170.90 and 456,793.28 is: 630,479.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    778,979.38 : 1,075,170.90 = 456,793.28 : x
  2. Step 2: Convert to fraction form
    778,979.38/1,075,170.90 = 456,793.28/x
  3. Step 3: Cross multiply
    778,979.38x = 1,075,170.90 × 456,793.28
  4. Step 4: Simplify right side
    778,979.38x = 491,130,841,971.55
  5. Step 5: Solve for x
    x = 491,130,841,971.55/778,979.38
  6. Step 6: Final answer
    x = 630,479.90

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.