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Finding the Fourth Proportional to 898,809.64, 1,240,349.70 and 496,393

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Solution

The fourth proportional to 898,809.64, 1,240,349.70 and 496,393 is: 685,018.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    898,809.64 : 1,240,349.70 = 496,393 : x
  2. Step 2: Convert to fraction form
    898,809.64/1,240,349.70 = 496,393/x
  3. Step 3: Cross multiply
    898,809.64x = 1,240,349.70 × 496,393
  4. Step 4: Simplify right side
    898,809.64x = 615,700,908,632.10
  5. Step 5: Solve for x
    x = 615,700,908,632.10/898,809.64
  6. Step 6: Final answer
    x = 685,018.14

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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.