Home / 1,186,758,065.60-1,780,137,098.40-778,051,505.60

Finding the Fourth Proportional to 1,186,758,065.60, 1,780,137,098.40 and 778,051,505.60

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Solution

The fourth proportional to 1,186,758,065.60, 1,780,137,098.40 and 778,051,505.60 is: 1,167,077,258.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,186,758,065.60 : 1,780,137,098.40 = 778,051,505.60 : x
  2. Step 2: Convert to fraction form
    1,186,758,065.60/1,780,137,098.40 = 778,051,505.60/x
  3. Step 3: Cross multiply
    1,186,758,065.60x = 1,780,137,098.40 × 778,051,505.60
  4. Step 4: Simplify right side
    1,186,758,065.60x = 1,385,038,349,584,535,552
  5. Step 5: Solve for x
    x = 1,385,038,349,584,535,552/1,186,758,065.60
  6. Step 6: Final answer
    x = 1,167,077,258.40

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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.