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Finding the Fourth Proportional to 646,742.70, 904,258.80 and 646,742.70

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Solution

The fourth proportional to 646,742.70, 904,258.80 and 646,742.70 is: 904,258.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,742.70 : 904,258.80 = 646,742.70 : x
  2. Step 2: Convert to fraction form
    646,742.70/904,258.80 = 646,742.70/x
  3. Step 3: Cross multiply
    646,742.70x = 904,258.80 × 646,742.70
  4. Step 4: Simplify right side
    646,742.70x = 584,822,777,810.76
  5. Step 5: Solve for x
    x = 584,822,777,810.76/646,742.70
  6. Step 6: Final answer
    x = 904,258.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.