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Finding the Fourth Proportional to 660,064,646.00, 909,979,026.40 and 526,555,703.45

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Solution

The fourth proportional to 660,064,646.00, 909,979,026.40 and 526,555,703.45 is: 725,920,785.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    660,064,646.00 : 909,979,026.40 = 526,555,703.45 : x
  2. Step 2: Convert to fraction form
    660,064,646.00/909,979,026.40 = 526,555,703.45/x
  3. Step 3: Cross multiply
    660,064,646.00x = 909,979,026.40 × 526,555,703.45
  4. Step 4: Simplify right side
    660,064,646.00x = 479,154,646,373,736,512
  5. Step 5: Solve for x
    x = 479,154,646,373,736,512/660,064,646.00
  6. Step 6: Final answer
    x = 725,920,785.60

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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.