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Finding the Fourth Proportional to 660,064,648.25, 909,979,029.50 and 526,555,705.70

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Solution

The fourth proportional to 660,064,648.25, 909,979,029.50 and 526,555,705.70 is: 725,920,788.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,064,648.25 : 909,979,029.50 = 526,555,705.70 : x
  2. Step 2: Convert to fraction form
    660,064,648.25/909,979,029.50 = 526,555,705.70/x
  3. Step 3: Cross multiply
    660,064,648.25x = 909,979,029.50 × 526,555,705.70
  4. Step 4: Simplify right side
    660,064,648.25x = 479,154,650,050,215,808
  5. Step 5: Solve for x
    x = 479,154,650,050,215,808/660,064,648.25
  6. Step 6: Final answer
    x = 725,920,788.70

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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.