Home / 670,009,543.20-1,005,014,314.80-515,041,347.60

Finding the Fourth Proportional to 670,009,543.20, 1,005,014,314.80 and 515,041,347.60

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Solution

The fourth proportional to 670,009,543.20, 1,005,014,314.80 and 515,041,347.60 is: 772,562,021.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,009,543.20 : 1,005,014,314.80 = 515,041,347.60 : x
  2. Step 2: Convert to fraction form
    670,009,543.20/1,005,014,314.80 = 515,041,347.60/x
  3. Step 3: Cross multiply
    670,009,543.20x = 1,005,014,314.80 × 515,041,347.60
  4. Step 4: Simplify right side
    670,009,543.20x = 517,623,927,051,882,624
  5. Step 5: Solve for x
    x = 517,623,927,051,882,624/670,009,543.20
  6. Step 6: Final answer
    x = 772,562,021.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.