Home / 664,607,776.60-917,145,294.78-403,931,373.40

Finding the Fourth Proportional to 664,607,776.60, 917,145,294.78 and 403,931,373.40

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Solution

The fourth proportional to 664,607,776.60, 917,145,294.78 and 403,931,373.40 is: 557,417,128.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,607,776.60 : 917,145,294.78 = 403,931,373.40 : x
  2. Step 2: Convert to fraction form
    664,607,776.60/917,145,294.78 = 403,931,373.40/x
  3. Step 3: Cross multiply
    664,607,776.60x = 917,145,294.78 × 403,931,373.40
  4. Step 4: Simplify right side
    664,607,776.60x = 370,463,758,527,833,216
  5. Step 5: Solve for x
    x = 370,463,758,527,833,216/664,607,776.60
  6. Step 6: Final answer
    x = 557,417,128.68

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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.