Home / 478,305,768.51-660,075,950.12-280,048,714.11

Finding the Fourth Proportional to 478,305,768.51, 660,075,950.12 and 280,048,714.11

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Solution

The fourth proportional to 478,305,768.51, 660,075,950.12 and 280,048,714.11 is: 386,475,416.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,305,768.51 : 660,075,950.12 = 280,048,714.11 : x
  2. Step 2: Convert to fraction form
    478,305,768.51/660,075,950.12 = 280,048,714.11/x
  3. Step 3: Cross multiply
    478,305,768.51x = 660,075,950.12 × 280,048,714.11
  4. Step 4: Simplify right side
    478,305,768.51x = 184,853,421,044,642,272
  5. Step 5: Solve for x
    x = 184,853,421,044,642,272/478,305,768.51
  6. Step 6: Final answer
    x = 386,475,416.39

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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.