Home / 642,114,802.40-963,172,203.60-438,041,458.40

Finding the Fourth Proportional to 642,114,802.40, 963,172,203.60 and 438,041,458.40

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Solution

The fourth proportional to 642,114,802.40, 963,172,203.60 and 438,041,458.40 is: 657,062,187.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,114,802.40 : 963,172,203.60 = 438,041,458.40 : x
  2. Step 2: Convert to fraction form
    642,114,802.40/963,172,203.60 = 438,041,458.40/x
  3. Step 3: Cross multiply
    642,114,802.40x = 963,172,203.60 × 438,041,458.40
  4. Step 4: Simplify right side
    642,114,802.40x = 421,909,356,755,285,696
  5. Step 5: Solve for x
    x = 421,909,356,755,285,696/642,114,802.40
  6. Step 6: Final answer
    x = 657,062,187.60

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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.