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Finding the Fourth Proportional to 637,813.80, 956,720.70 and 401,423.40

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Solution

The fourth proportional to 637,813.80, 956,720.70 and 401,423.40 is: 602,135.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    637,813.80 : 956,720.70 = 401,423.40 : x
  2. Step 2: Convert to fraction form
    637,813.80/956,720.70 = 401,423.40/x
  3. Step 3: Cross multiply
    637,813.80x = 956,720.70 × 401,423.40
  4. Step 4: Simplify right side
    637,813.80x = 384,050,076,244.38
  5. Step 5: Solve for x
    x = 384,050,076,244.38/637,813.80
  6. Step 6: Final answer
    x = 602,135.10

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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.