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Finding the Fourth Proportional to 646,790.40, 968,342.40 and 628,358.40

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Solution

The fourth proportional to 646,790.40, 968,342.40 and 628,358.40 is: 940,746.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,790.40 : 968,342.40 = 628,358.40 : x
  2. Step 2: Convert to fraction form
    646,790.40/968,342.40 = 628,358.40/x
  3. Step 3: Cross multiply
    646,790.40x = 968,342.40 × 628,358.40
  4. Step 4: Simplify right side
    646,790.40x = 608,466,081,116.16
  5. Step 5: Solve for x
    x = 608,466,081,116.16/646,790.40
  6. Step 6: Final answer
    x = 940,746.93

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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.