Home / 515,779,610.40-773,669,415.60-257,499,284.40

Finding the Fourth Proportional to 515,779,610.40, 773,669,415.60 and 257,499,284.40

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Solution

The fourth proportional to 515,779,610.40, 773,669,415.60 and 257,499,284.40 is: 386,248,926.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    515,779,610.40 : 773,669,415.60 = 257,499,284.40 : x
  2. Step 2: Convert to fraction form
    515,779,610.40/773,669,415.60 = 257,499,284.40/x
  3. Step 3: Cross multiply
    515,779,610.40x = 773,669,415.60 × 257,499,284.40
  4. Step 4: Simplify right side
    515,779,610.40x = 199,219,320,879,166,208
  5. Step 5: Solve for x
    x = 199,219,320,879,166,208/515,779,610.40
  6. Step 6: Final answer
    x = 386,248,926.60

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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.