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Finding the Fourth Proportional to 640,547.43, 883,924.90 and 350,173.98

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Solution

The fourth proportional to 640,547.43, 883,924.90 and 350,173.98 is: 483,223.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,547.43 : 883,924.90 = 350,173.98 : x
  2. Step 2: Convert to fraction form
    640,547.43/883,924.90 = 350,173.98/x
  3. Step 3: Cross multiply
    640,547.43x = 883,924.90 × 350,173.98
  4. Step 4: Simplify right side
    640,547.43x = 309,527,500,254.10
  5. Step 5: Solve for x
    x = 309,527,500,254.10/640,547.43
  6. Step 6: Final answer
    x = 483,223.39

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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.