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Finding the Fourth Proportional to 572,019.19, 789,386.60 and 317,369.77

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Solution

The fourth proportional to 572,019.19, 789,386.60 and 317,369.77 is: 437,970.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,019.19 : 789,386.60 = 317,369.77 : x
  2. Step 2: Convert to fraction form
    572,019.19/789,386.60 = 317,369.77/x
  3. Step 3: Cross multiply
    572,019.19x = 789,386.60 × 317,369.77
  4. Step 4: Simplify right side
    572,019.19x = 250,527,443,683.08
  5. Step 5: Solve for x
    x = 250,527,443,683.08/572,019.19
  6. Step 6: Final answer
    x = 437,970.35

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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.