Home / 779,319.43-1,075,640.11-457,133.32

Finding the Fourth Proportional to 779,319.43, 1,075,640.11 and 457,133.32

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Solution

The fourth proportional to 779,319.43, 1,075,640.11 and 457,133.32 is: 630,949.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    779,319.43 : 1,075,640.11 = 457,133.32 : x
  2. Step 2: Convert to fraction form
    779,319.43/1,075,640.11 = 457,133.32/x
  3. Step 3: Cross multiply
    779,319.43x = 1,075,640.11 × 457,133.32
  4. Step 4: Simplify right side
    779,319.43x = 491,710,934,811.18
  5. Step 5: Solve for x
    x = 491,710,934,811.18/779,319.43
  6. Step 6: Final answer
    x = 630,949.16

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Double scale
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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.