Home / 1,312,730.40-1,969,095.60-315,458.40

Finding the Fourth Proportional to 1,312,730.40, 1,969,095.60 and 315,458.40

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Solution

The fourth proportional to 1,312,730.40, 1,969,095.60 and 315,458.40 is: 473,187.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,312,730.40 : 1,969,095.60 = 315,458.40 : x
  2. Step 2: Convert to fraction form
    1,312,730.40/1,969,095.60 = 315,458.40/x
  3. Step 3: Cross multiply
    1,312,730.40x = 1,969,095.60 × 315,458.40
  4. Step 4: Simplify right side
    1,312,730.40x = 621,167,747,423.04
  5. Step 5: Solve for x
    x = 621,167,747,423.04/1,312,730.40
  6. Step 6: Final answer
    x = 473,187.60

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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.