Home / 1,109,824,421.51-1,664,239,070.55-661,339,327.16

Finding the Fourth Proportional to 1,109,824,421.51, 1,664,239,070.55 and 661,339,327.16

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Solution

The fourth proportional to 1,109,824,421.51, 1,664,239,070.55 and 661,339,327.16 is: 991,712,495.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,109,824,421.51 : 1,664,239,070.55 = 661,339,327.16 : x
  2. Step 2: Convert to fraction form
    1,109,824,421.51/1,664,239,070.55 = 661,339,327.16/x
  3. Step 3: Cross multiply
    1,109,824,421.51x = 1,664,239,070.55 × 661,339,327.16
  4. Step 4: Simplify right side
    1,109,824,421.51x = 1,100,626,747,150,920,704
  5. Step 5: Solve for x
    x = 1,100,626,747,150,920,704/1,109,824,421.51
  6. Step 6: Final answer
    x = 991,712,495.98

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Double scale
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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.