Home / 849,486.16-1,172,120.98-487,023.72

Finding the Fourth Proportional to 849,486.16, 1,172,120.98 and 487,023.72

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Solution

The fourth proportional to 849,486.16, 1,172,120.98 and 487,023.72 is: 671,995.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    849,486.16 : 1,172,120.98 = 487,023.72 : x
  2. Step 2: Convert to fraction form
    849,486.16/1,172,120.98 = 487,023.72/x
  3. Step 3: Cross multiply
    849,486.16x = 1,172,120.98 × 487,023.72
  4. Step 4: Simplify right side
    849,486.16x = 570,850,719,969.65
  5. Step 5: Solve for x
    x = 570,850,719,969.65/849,486.16
  6. Step 6: Final answer
    x = 671,995.32

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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.