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Finding the Fourth Proportional to 572,055.75, 789,437.07 and 317,408.76

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Solution

The fourth proportional to 572,055.75, 789,437.07 and 317,408.76 is: 438,024.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,055.75 : 789,437.07 = 317,408.76 : x
  2. Step 2: Convert to fraction form
    572,055.75/789,437.07 = 317,408.76/x
  3. Step 3: Cross multiply
    572,055.75x = 789,437.07 × 317,408.76
  4. Step 4: Simplify right side
    572,055.75x = 250,574,241,486.73
  5. Step 5: Solve for x
    x = 250,574,241,486.73/572,055.75
  6. Step 6: Final answer
    x = 438,024.16

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.