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Finding the Fourth Proportional to 611,816,690.80, 917,725,036.20 and 528,593,030.20

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Solution

The fourth proportional to 611,816,690.80, 917,725,036.20 and 528,593,030.20 is: 792,889,545.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,816,690.80 : 917,725,036.20 = 528,593,030.20 : x
  2. Step 2: Convert to fraction form
    611,816,690.80/917,725,036.20 = 528,593,030.20/x
  3. Step 3: Cross multiply
    611,816,690.80x = 917,725,036.20 × 528,593,030.20
  4. Step 4: Simplify right side
    611,816,690.80x = 485,103,057,775,362,688
  5. Step 5: Solve for x
    x = 485,103,057,775,362,688/611,816,690.80
  6. Step 6: Final answer
    x = 792,889,545.30

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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.