Home / 1,289,394,210.45-1,779,346,989.59-717,173,404.05

Finding the Fourth Proportional to 1,289,394,210.45, 1,779,346,989.59 and 717,173,404.05

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Solution

The fourth proportional to 1,289,394,210.45, 1,779,346,989.59 and 717,173,404.05 is: 989,689,830.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,289,394,210.45 : 1,779,346,989.59 = 717,173,404.05 : x
  2. Step 2: Convert to fraction form
    1,289,394,210.45/1,779,346,989.59 = 717,173,404.05/x
  3. Step 3: Cross multiply
    1,289,394,210.45x = 1,779,346,989.59 × 717,173,404.05
  4. Step 4: Simplify right side
    1,289,394,210.45x = 1,276,100,337,510,380,032
  5. Step 5: Solve for x
    x = 1,276,100,337,510,380,032/1,289,394,210.45
  6. Step 6: Final answer
    x = 989,689,830.44

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.