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Finding the Fourth Proportional to 620,873,301.60, 931,309,952.40 and 528,544,285.20

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Solution

The fourth proportional to 620,873,301.60, 931,309,952.40 and 528,544,285.20 is: 792,816,427.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,873,301.60 : 931,309,952.40 = 528,544,285.20 : x
  2. Step 2: Convert to fraction form
    620,873,301.60/931,309,952.40 = 528,544,285.20/x
  3. Step 3: Cross multiply
    620,873,301.60x = 931,309,952.40 × 528,544,285.20
  4. Step 4: Simplify right side
    620,873,301.60x = 492,238,553,090,904,000
  5. Step 5: Solve for x
    x = 492,238,553,090,904,000/620,873,301.60
  6. Step 6: Final answer
    x = 792,816,427.80

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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.