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Finding the Fourth Proportional to 1,353,837,689.08, 1,868,016,239.19 and 781,610,825.50

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Solution

The fourth proportional to 1,353,837,689.08, 1,868,016,239.19 and 781,610,825.50 is: 1,078,461,418.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,353,837,689.08 : 1,868,016,239.19 = 781,610,825.50 : x
  2. Step 2: Convert to fraction form
    1,353,837,689.08/1,868,016,239.19 = 781,610,825.50/x
  3. Step 3: Cross multiply
    1,353,837,689.08x = 1,868,016,239.19 × 781,610,825.50
  4. Step 4: Simplify right side
    1,353,837,689.08x = 1,460,061,714,760,701,440
  5. Step 5: Solve for x
    x = 1,460,061,714,760,701,440/1,353,837,689.08
  6. Step 6: Final answer
    x = 1,078,461,418.63

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1.5x scale

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.