Home / 672,579,415.40-1,008,869,123.10-412,952,772.20

Finding the Fourth Proportional to 672,579,415.40, 1,008,869,123.10 and 412,952,772.20

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Solution

The fourth proportional to 672,579,415.40, 1,008,869,123.10 and 412,952,772.20 is: 619,429,158.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    672,579,415.40 : 1,008,869,123.10 = 412,952,772.20 : x
  2. Step 2: Convert to fraction form
    672,579,415.40/1,008,869,123.10 = 412,952,772.20/x
  3. Step 3: Cross multiply
    672,579,415.40x = 1,008,869,123.10 × 412,952,772.20
  4. Step 4: Simplify right side
    672,579,415.40x = 416,615,301,171,128,064
  5. Step 5: Solve for x
    x = 416,615,301,171,128,064/672,579,415.40
  6. Step 6: Final answer
    x = 619,429,158.30

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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.