Home / 1,312,752.60-1,969,128.90-315,480.60

Finding the Fourth Proportional to 1,312,752.60, 1,969,128.90 and 315,480.60

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Solution

The fourth proportional to 1,312,752.60, 1,969,128.90 and 315,480.60 is: 473,220.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312,752.60 : 1,969,128.90 = 315,480.60 : x
  2. Step 2: Convert to fraction form
    1,312,752.60/1,969,128.90 = 315,480.60/x
  3. Step 3: Cross multiply
    1,312,752.60x = 1,969,128.90 × 315,480.60
  4. Step 4: Simplify right side
    1,312,752.60x = 621,221,966,849.34
  5. Step 5: Solve for x
    x = 621,221,966,849.34/1,312,752.60
  6. Step 6: Final answer
    x = 473,220.90

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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.