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Finding the Fourth Proportional to 559,430.10, 839,145.15 and 470,856.60

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Solution

The fourth proportional to 559,430.10, 839,145.15 and 470,856.60 is: 706,284.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,430.10 : 839,145.15 = 470,856.60 : x
  2. Step 2: Convert to fraction form
    559,430.10/839,145.15 = 470,856.60/x
  3. Step 3: Cross multiply
    559,430.10x = 839,145.15 × 470,856.60
  4. Step 4: Simplify right side
    559,430.10x = 395,117,032,235.49
  5. Step 5: Solve for x
    x = 395,117,032,235.49/559,430.10
  6. Step 6: Final answer
    x = 706,284.90

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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.