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Finding the Fourth Proportional to 898,907.04, 1,240,448.40 and 496,490.40

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Solution

The fourth proportional to 898,907.04, 1,240,448.40 and 496,490.40 is: 685,132.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,907.04 : 1,240,448.40 = 496,490.40 : x
  2. Step 2: Convert to fraction form
    898,907.04/1,240,448.40 = 496,490.40/x
  3. Step 3: Cross multiply
    898,907.04x = 1,240,448.40 × 496,490.40
  4. Step 4: Simplify right side
    898,907.04x = 615,870,722,295.36
  5. Step 5: Solve for x
    x = 615,870,722,295.36/898,907.04
  6. Step 6: Final answer
    x = 685,132.83

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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.