Home / 919,853,978.61-1,269,392,032.91-502,166,263.89

Finding the Fourth Proportional to 919,853,978.61, 1,269,392,032.91 and 502,166,263.89

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Solution

The fourth proportional to 919,853,978.61, 1,269,392,032.91 and 502,166,263.89 is: 692,985,918.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    919,853,978.61 : 1,269,392,032.91 = 502,166,263.89 : x
  2. Step 2: Convert to fraction form
    919,853,978.61/1,269,392,032.91 = 502,166,263.89/x
  3. Step 3: Cross multiply
    919,853,978.61x = 1,269,392,032.91 × 502,166,263.89
  4. Step 4: Simplify right side
    919,853,978.61x = 637,445,854,575,635,712
  5. Step 5: Solve for x
    x = 637,445,854,575,635,712/919,853,978.61
  6. Step 6: Final answer
    x = 692,985,918.85

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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.