Home / 642,744,417.40-886,997,014.60-360,549,412.72

Finding the Fourth Proportional to 642,744,417.40, 886,997,014.60 and 360,549,412.72

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Solution

The fourth proportional to 642,744,417.40, 886,997,014.60 and 360,549,412.72 is: 497,563,641.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    642,744,417.40 : 886,997,014.60 = 360,549,412.72 : x
  2. Step 2: Convert to fraction form
    642,744,417.40/886,997,014.60 = 360,549,412.72/x
  3. Step 3: Cross multiply
    642,744,417.40x = 886,997,014.60 × 360,549,412.72
  4. Step 4: Simplify right side
    642,744,417.40x = 319,806,252,698,423,296
  5. Step 5: Solve for x
    x = 319,806,252,698,423,296/642,744,417.40
  6. Step 6: Final answer
    x = 497,563,641.22

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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.