Home / 1,210,586,603.40-1,815,879,905.10-392,698,904.40

Finding the Fourth Proportional to 1,210,586,603.40, 1,815,879,905.10 and 392,698,904.40

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Solution

The fourth proportional to 1,210,586,603.40, 1,815,879,905.10 and 392,698,904.40 is: 589,048,356.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,210,586,603.40 : 1,815,879,905.10 = 392,698,904.40 : x
  2. Step 2: Convert to fraction form
    1,210,586,603.40/1,815,879,905.10 = 392,698,904.40/x
  3. Step 3: Cross multiply
    1,210,586,603.40x = 1,815,879,905.10 × 392,698,904.40
  4. Step 4: Simplify right side
    1,210,586,603.40x = 713,094,049,254,745,856
  5. Step 5: Solve for x
    x = 713,094,049,254,745,856/1,210,586,603.40
  6. Step 6: Final answer
    x = 589,048,356.60

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Double scale
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1.5x scale

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.