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Finding the Fourth Proportional to 540,746.80, 811,120.20 and 470,762.80

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Solution

The fourth proportional to 540,746.80, 811,120.20 and 470,762.80 is: 706,144.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    540,746.80 : 811,120.20 = 470,762.80 : x
  2. Step 2: Convert to fraction form
    540,746.80/811,120.20 = 470,762.80/x
  3. Step 3: Cross multiply
    540,746.80x = 811,120.20 × 470,762.80
  4. Step 4: Simplify right side
    540,746.80x = 381,845,216,488.56
  5. Step 5: Solve for x
    x = 381,845,216,488.56/540,746.80
  6. Step 6: Final answer
    x = 706,144.20

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Double scale
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Similar ratio
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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.