Home / 642,752,044,411.80-886,997,966,070.93-353,720,303,800.35

Finding the Fourth Proportional to 642,752,044,411.80, 886,997,966,070.93 and 353,720,303,800.35

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Solution

The fourth proportional to 642,752,044,411.80, 886,997,966,070.93 and 353,720,303,800.35 is: 488,134,098,921.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,752,044,411.80 : 886,997,966,070.93 = 353,720,303,800.35 : x
  2. Step 2: Convert to fraction form
    642,752,044,411.80/886,997,966,070.93 = 353,720,303,800.35/x
  3. Step 3: Cross multiply
    642,752,044,411.80x = 886,997,966,070.93 × 353,720,303,800.35
  4. Step 4: Simplify right side
    642,752,044,411.80x = 313,749,190,028,901,899,829,248
  5. Step 5: Solve for x
    x = 313,749,190,028,901,899,829,248/642,752,044,411.80
  6. Step 6: Final answer
    x = 488,134,098,921.49

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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.