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Finding the Fourth Proportional to 604,990.70, 907,486.05 and 510,512.30

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Solution

The fourth proportional to 604,990.70, 907,486.05 and 510,512.30 is: 765,768.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,990.70 : 907,486.05 = 510,512.30 : x
  2. Step 2: Convert to fraction form
    604,990.70/907,486.05 = 510,512.30/x
  3. Step 3: Cross multiply
    604,990.70x = 907,486.05 × 510,512.30
  4. Step 4: Simplify right side
    604,990.70x = 463,282,790,603.42
  5. Step 5: Solve for x
    x = 463,282,790,603.42/604,990.70
  6. Step 6: Final answer
    x = 765,768.45

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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.