Home / 912,316.80-1,368,345.60-313,305.60

Finding the Fourth Proportional to 912,316.80, 1,368,345.60 and 313,305.60

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Solution

The fourth proportional to 912,316.80, 1,368,345.60 and 313,305.60 is: 469,913.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    912,316.80 : 1,368,345.60 = 313,305.60 : x
  2. Step 2: Convert to fraction form
    912,316.80/1,368,345.60 = 313,305.60/x
  3. Step 3: Cross multiply
    912,316.80x = 1,368,345.60 × 313,305.60
  4. Step 4: Simplify right side
    912,316.80x = 428,710,339,215.36
  5. Step 5: Solve for x
    x = 428,710,339,215.36/912,316.80
  6. Step 6: Final answer
    x = 469,913.89

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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.