Home / 686,594,211.60-1,029,891,317.40-640,908,656.40

Finding the Fourth Proportional to 686,594,211.60, 1,029,891,317.40 and 640,908,656.40

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Solution

The fourth proportional to 686,594,211.60, 1,029,891,317.40 and 640,908,656.40 is: 961,362,984.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    686,594,211.60 : 1,029,891,317.40 = 640,908,656.40 : x
  2. Step 2: Convert to fraction form
    686,594,211.60/1,029,891,317.40 = 640,908,656.40/x
  3. Step 3: Cross multiply
    686,594,211.60x = 1,029,891,317.40 × 640,908,656.40
  4. Step 4: Simplify right side
    686,594,211.60x = 660,066,260,472,859,904
  5. Step 5: Solve for x
    x = 660,066,260,472,859,904/686,594,211.60
  6. Step 6: Final answer
    x = 961,362,984.60

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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.