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Finding the Fourth Proportional to 561,649,019.40, 842,473,529.10 and 545,506,499.03

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Solution

The fourth proportional to 561,649,019.40, 842,473,529.10 and 545,506,499.03 is: 818,259,748.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,649,019.40 : 842,473,529.10 = 545,506,499.03 : x
  2. Step 2: Convert to fraction form
    561,649,019.40/842,473,529.10 = 545,506,499.03/x
  3. Step 3: Cross multiply
    561,649,019.40x = 842,473,529.10 × 545,506,499.03
  4. Step 4: Simplify right side
    561,649,019.40x = 459,574,785,380,577,472
  5. Step 5: Solve for x
    x = 459,574,785,380,577,472/561,649,019.40
  6. Step 6: Final answer
    x = 818,259,748.54

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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.