Home / 712,128,727.20-1,068,193,090.80-400,916,877.60

Finding the Fourth Proportional to 712,128,727.20, 1,068,193,090.80 and 400,916,877.60

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Solution

The fourth proportional to 712,128,727.20, 1,068,193,090.80 and 400,916,877.60 is: 601,375,316.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    712,128,727.20 : 1,068,193,090.80 = 400,916,877.60 : x
  2. Step 2: Convert to fraction form
    712,128,727.20/1,068,193,090.80 = 400,916,877.60/x
  3. Step 3: Cross multiply
    712,128,727.20x = 1,068,193,090.80 × 400,916,877.60
  4. Step 4: Simplify right side
    712,128,727.20x = 428,256,638,637,429,312
  5. Step 5: Solve for x
    x = 428,256,638,637,429,312/712,128,727.20
  6. Step 6: Final answer
    x = 601,375,316.40

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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.