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Finding the Fourth Proportional to 570,320.65, 786,960.12 and 315,671.23

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Solution

The fourth proportional to 570,320.65, 786,960.12 and 315,671.23 is: 435,580.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,320.65 : 786,960.12 = 315,671.23 : x
  2. Step 2: Convert to fraction form
    570,320.65/786,960.12 = 315,671.23/x
  3. Step 3: Cross multiply
    570,320.65x = 786,960.12 × 315,671.23
  4. Step 4: Simplify right side
    570,320.65x = 248,420,669,041.35
  5. Step 5: Solve for x
    x = 248,420,669,041.35/570,320.65
  6. Step 6: Final answer
    x = 435,580.70

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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.