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Finding the Fourth Proportional to 646,746.20, 904,263.70 and 646,746.20

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Solution

The fourth proportional to 646,746.20, 904,263.70 and 646,746.20 is: 904,263.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,746.20 : 904,263.70 = 646,746.20 : x
  2. Step 2: Convert to fraction form
    646,746.20/904,263.70 = 646,746.20/x
  3. Step 3: Cross multiply
    646,746.20x = 904,263.70 × 646,746.20
  4. Step 4: Simplify right side
    646,746.20x = 584,829,111,772.94
  5. Step 5: Solve for x
    x = 584,829,111,772.94/646,746.20
  6. Step 6: Final answer
    x = 904,263.70

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Double scale
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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.