Home / 647,481,146.40-971,221,719.60-579,456,698.40

Finding the Fourth Proportional to 647,481,146.40, 971,221,719.60 and 579,456,698.40

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Solution

The fourth proportional to 647,481,146.40, 971,221,719.60 and 579,456,698.40 is: 869,185,047.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,481,146.40 : 971,221,719.60 = 579,456,698.40 : x
  2. Step 2: Convert to fraction form
    647,481,146.40/971,221,719.60 = 579,456,698.40/x
  3. Step 3: Cross multiply
    647,481,146.40x = 971,221,719.60 × 579,456,698.40
  4. Step 4: Simplify right side
    647,481,146.40x = 562,780,931,053,786,560
  5. Step 5: Solve for x
    x = 562,780,931,053,786,560/647,481,146.40
  6. Step 6: Final answer
    x = 869,185,047.60

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Double scale
Find fourth proportional to 647,481,147.40, 971,221,721.10 and 579,456,699.40
Similar ratio
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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.