Home / 985,328.74-1,360,123.41-645,818.86

Finding the Fourth Proportional to 985,328.74, 1,360,123.41 and 645,818.86

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Solution

The fourth proportional to 985,328.74, 1,360,123.41 and 645,818.86 is: 891,472.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    985,328.74 : 1,360,123.41 = 645,818.86 : x
  2. Step 2: Convert to fraction form
    985,328.74/1,360,123.41 = 645,818.86/x
  3. Step 3: Cross multiply
    985,328.74x = 1,360,123.41 × 645,818.86
  4. Step 4: Simplify right side
    985,328.74x = 878,393,350,105.51
  5. Step 5: Solve for x
    x = 878,393,350,105.51/985,328.74
  6. Step 6: Final answer
    x = 891,472.37

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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.