Home / 657,072,777.60-985,609,166.40-398,579,875.20

Finding the Fourth Proportional to 657,072,777.60, 985,609,166.40 and 398,579,875.20

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Solution

The fourth proportional to 657,072,777.60, 985,609,166.40 and 398,579,875.20 is: 597,869,812.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    657,072,777.60 : 985,609,166.40 = 398,579,875.20 : x
  2. Step 2: Convert to fraction form
    657,072,777.60/985,609,166.40 = 398,579,875.20/x
  3. Step 3: Cross multiply
    657,072,777.60x = 985,609,166.40 × 398,579,875.20
  4. Step 4: Simplify right side
    657,072,777.60x = 392,843,978,539,688,000
  5. Step 5: Solve for x
    x = 392,843,978,539,688,000/657,072,777.60
  6. Step 6: Final answer
    x = 597,869,812.80

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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.