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Finding the Fourth Proportional to 877,438,916.76, 1,210,159,665 and 771,365,531.46

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Solution

The fourth proportional to 877,438,916.76, 1,210,159,665 and 771,365,531.46 is: 1,063,863,746.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    877,438,916.76 : 1,210,159,665 = 771,365,531.46 : x
  2. Step 2: Convert to fraction form
    877,438,916.76/1,210,159,665 = 771,365,531.46/x
  3. Step 3: Cross multiply
    877,438,916.76x = 1,210,159,665 × 771,365,531.46
  4. Step 4: Simplify right side
    877,438,916.76x = 933,475,453,144,180,608
  5. Step 5: Solve for x
    x = 933,475,453,144,180,608/877,438,916.76
  6. Step 6: Final answer
    x = 1,063,863,746.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.