Home / 912,364.80-1,368,155.76-313,386.24

Finding the Fourth Proportional to 912,364.80, 1,368,155.76 and 313,386.24

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Solution

The fourth proportional to 912,364.80, 1,368,155.76 and 313,386.24 is: 469,944.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,364.80 : 1,368,155.76 = 313,386.24 : x
  2. Step 2: Convert to fraction form
    912,364.80/1,368,155.76 = 313,386.24/x
  3. Step 3: Cross multiply
    912,364.80x = 1,368,155.76 × 313,386.24
  4. Step 4: Simplify right side
    912,364.80x = 428,761,189,360.74
  5. Step 5: Solve for x
    x = 428,761,189,360.74/912,364.80
  6. Step 6: Final answer
    x = 469,944.91

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1.5x scale

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.