Home / 611,869.10-917,708.87-312,570.86

Finding the Fourth Proportional to 611,869.10, 917,708.87 and 312,570.86

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Solution

The fourth proportional to 611,869.10, 917,708.87 and 312,570.86 is: 468,807.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,869.10 : 917,708.87 = 312,570.86 : x
  2. Step 2: Convert to fraction form
    611,869.10/917,708.87 = 312,570.86/x
  3. Step 3: Cross multiply
    611,869.10x = 917,708.87 × 312,570.86
  4. Step 4: Simplify right side
    611,869.10x = 286,849,046,918.41
  5. Step 5: Solve for x
    x = 286,849,046,918.41/611,869.10
  6. Step 6: Final answer
    x = 468,807.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.