Home / 686,592,653.20-1,029,888,979.80-611,345,856.40

Finding the Fourth Proportional to 686,592,653.20, 1,029,888,979.80 and 611,345,856.40

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Solution

The fourth proportional to 686,592,653.20, 1,029,888,979.80 and 611,345,856.40 is: 917,018,784.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,592,653.20 : 1,029,888,979.80 = 611,345,856.40 : x
  2. Step 2: Convert to fraction form
    686,592,653.20/1,029,888,979.80 = 611,345,856.40/x
  3. Step 3: Cross multiply
    686,592,653.20x = 1,029,888,979.80 × 611,345,856.40
  4. Step 4: Simplify right side
    686,592,653.20x = 629,618,360,352,753,280
  5. Step 5: Solve for x
    x = 629,618,360,352,753,280/686,592,653.20
  6. Step 6: Final answer
    x = 917,018,784.60

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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.