Home / 651,888,011.20-977,832,016.80-215,256,085.60

Finding the Fourth Proportional to 651,888,011.20, 977,832,016.80 and 215,256,085.60

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Solution

The fourth proportional to 651,888,011.20, 977,832,016.80 and 215,256,085.60 is: 322,884,128.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    651,888,011.20 : 977,832,016.80 = 215,256,085.60 : x
  2. Step 2: Convert to fraction form
    651,888,011.20/977,832,016.80 = 215,256,085.60/x
  3. Step 3: Cross multiply
    651,888,011.20x = 977,832,016.80 × 215,256,085.60
  4. Step 4: Simplify right side
    651,888,011.20x = 210,484,292,310,721,408
  5. Step 5: Solve for x
    x = 210,484,292,310,721,408/651,888,011.20
  6. Step 6: Final answer
    x = 322,884,128.40

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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.