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Finding the Fourth Proportional to 688,690.72, 950,450.32 and 402,302.72

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Solution

The fourth proportional to 688,690.72, 950,450.32 and 402,302.72 is: 555,211.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    688,690.72 : 950,450.32 = 402,302.72 : x
  2. Step 2: Convert to fraction form
    688,690.72/950,450.32 = 402,302.72/x
  3. Step 3: Cross multiply
    688,690.72x = 950,450.32 × 402,302.72
  4. Step 4: Simplify right side
    688,690.72x = 382,368,748,960.87
  5. Step 5: Solve for x
    x = 382,368,748,960.87/688,690.72
  6. Step 6: Final answer
    x = 555,211.12

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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.