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Finding the Fourth Proportional to 586,070, 808,776.60 and 317,798

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Solution

The fourth proportional to 586,070, 808,776.60 and 317,798 is: 438,561.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,070 : 808,776.60 = 317,798 : x
  2. Step 2: Convert to fraction form
    586,070/808,776.60 = 317,798/x
  3. Step 3: Cross multiply
    586,070x = 808,776.60 × 317,798
  4. Step 4: Simplify right side
    586,070x = 257,027,585,926.80
  5. Step 5: Solve for x
    x = 257,027,585,926.80/586,070
  6. Step 6: Final answer
    x = 438,561.24

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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.