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Finding the Fourth Proportional to 586,018.12, 808,705.46 and 317,746.12

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Solution

The fourth proportional to 586,018.12, 808,705.46 and 317,746.12 is: 438,489.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,018.12 : 808,705.46 = 317,746.12 : x
  2. Step 2: Convert to fraction form
    586,018.12/808,705.46 = 317,746.12/x
  3. Step 3: Cross multiply
    586,018.12x = 808,705.46 × 317,746.12
  4. Step 4: Simplify right side
    586,018.12x = 256,963,022,137.82
  5. Step 5: Solve for x
    x = 256,963,022,137.82/586,018.12
  6. Step 6: Final answer
    x = 438,489.89

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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.