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Finding the Fourth Proportional to 838,970,978.94, 1,258,506,912.36 and 256,710,269.01

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Solution

The fourth proportional to 838,970,978.94, 1,258,506,912.36 and 256,710,269.01 is: 385,080,838.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    838,970,978.94 : 1,258,506,912.36 = 256,710,269.01 : x
  2. Step 2: Convert to fraction form
    838,970,978.94/1,258,506,912.36 = 256,710,269.01/x
  3. Step 3: Cross multiply
    838,970,978.94x = 1,258,506,912.36 × 256,710,269.01
  4. Step 4: Simplify right side
    838,970,978.94x = 323,071,648,022,880,064
  5. Step 5: Solve for x
    x = 323,071,648,022,880,064/838,970,978.94
  6. Step 6: Final answer
    x = 385,080,838.47

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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.