Home / 852,326,810.40-1,278,490,215.60-393,161,786.40

Finding the Fourth Proportional to 852,326,810.40, 1,278,490,215.60 and 393,161,786.40

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Solution

The fourth proportional to 852,326,810.40, 1,278,490,215.60 and 393,161,786.40 is: 589,742,679.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    852,326,810.40 : 1,278,490,215.60 = 393,161,786.40 : x
  2. Step 2: Convert to fraction form
    852,326,810.40/1,278,490,215.60 = 393,161,786.40/x
  3. Step 3: Cross multiply
    852,326,810.40x = 1,278,490,215.60 × 393,161,786.40
  4. Step 4: Simplify right side
    852,326,810.40x = 502,653,497,060,217,088
  5. Step 5: Solve for x
    x = 502,653,497,060,217,088/852,326,810.40
  6. Step 6: Final answer
    x = 589,742,679.60

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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.