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Finding the Fourth Proportional to 613,496.10, 920,775.81 and 612,077.58

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Solution

The fourth proportional to 613,496.10, 920,775.81 and 612,077.58 is: 918,646.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,496.10 : 920,775.81 = 612,077.58 : x
  2. Step 2: Convert to fraction form
    613,496.10/920,775.81 = 612,077.58/x
  3. Step 3: Cross multiply
    613,496.10x = 920,775.81 × 612,077.58
  4. Step 4: Simplify right side
    613,496.10x = 563,586,229,507.34
  5. Step 5: Solve for x
    x = 563,586,229,507.34/613,496.10
  6. Step 6: Final answer
    x = 918,646.80

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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.