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Finding the Fourth Proportional to 501,555.56, 692,146.71 and 286,700.31

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Solution

The fourth proportional to 501,555.56, 692,146.71 and 286,700.31 is: 395,646.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    501,555.56 : 692,146.71 = 286,700.31 : x
  2. Step 2: Convert to fraction form
    501,555.56/692,146.71 = 286,700.31/x
  3. Step 3: Cross multiply
    501,555.56x = 692,146.71 × 286,700.31
  4. Step 4: Simplify right side
    501,555.56x = 198,438,676,322.48
  5. Step 5: Solve for x
    x = 198,438,676,322.48/501,555.56
  6. Step 6: Final answer
    x = 395,646.45

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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.