Home / 7,920,455,417.10-11,880,683,125.65-3,988,642,322.70

Finding the Fourth Proportional to 7,920,455,417.10, 11,880,683,125.65 and 3,988,642,322.70

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Solution

The fourth proportional to 7,920,455,417.10, 11,880,683,125.65 and 3,988,642,322.70 is: 5,982,963,484.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,920,455,417.10 : 11,880,683,125.65 = 3,988,642,322.70 : x
  2. Step 2: Convert to fraction form
    7,920,455,417.10/11,880,683,125.65 = 3,988,642,322.70/x
  3. Step 3: Cross multiply
    7,920,455,417.10x = 11,880,683,125.65 × 3,988,642,322.70
  4. Step 4: Simplify right side
    7,920,455,417.10x = 47,387,795,537,555,308,544
  5. Step 5: Solve for x
    x = 47,387,795,537,555,308,544/7,920,455,417.10
  6. Step 6: Final answer
    x = 5,982,963,484.05

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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.