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Finding the Fourth Proportional to 770,574,388.40, 1,157,749,019.40 and 579,471,412.40

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Solution

The fourth proportional to 770,574,388.40, 1,157,749,019.40 and 579,471,412.40 is: 870,626,469.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    770,574,388.40 : 1,157,749,019.40 = 579,471,412.40 : x
  2. Step 2: Convert to fraction form
    770,574,388.40/1,157,749,019.40 = 579,471,412.40/x
  3. Step 3: Cross multiply
    770,574,388.40x = 1,157,749,019.40 × 579,471,412.40
  4. Step 4: Simplify right side
    770,574,388.40x = 670,882,459,476,433,024
  5. Step 5: Solve for x
    x = 670,882,459,476,433,024/770,574,388.40
  6. Step 6: Final answer
    x = 870,626,469.78

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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.