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Finding the Fourth Proportional to 613,543.80, 921,006.90 and 473,921.40

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Solution

The fourth proportional to 613,543.80, 921,006.90 and 473,921.40 is: 711,416.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,543.80 : 921,006.90 = 473,921.40 : x
  2. Step 2: Convert to fraction form
    613,543.80/921,006.90 = 473,921.40/x
  3. Step 3: Cross multiply
    613,543.80x = 921,006.90 × 473,921.40
  4. Step 4: Simplify right side
    613,543.80x = 436,484,879,457.66
  5. Step 5: Solve for x
    x = 436,484,879,457.66/613,543.80
  6. Step 6: Final answer
    x = 711,416.01

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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.